1213234772040 has 96 divisors (see below), whose sum is σ = 3952119782520. Its totient is φ = 322782050304.

The previous prime is 1213234772033. The next prime is 1213234772047. The reversal of 1213234772040 is 402774323121.

1213234772040 is a `hidden beast` number, since 1 + 213 + 234 + 7 + 7 + 204 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1213234772033) and next prime (1213234772047).

It can be written as a sum of positive squares in 4 ways, for example, as 587329107876 + 625905664164 = 766374^2 + 791142^2 .

It is a super-2 number, since 2×1213234772040² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1213234771986 and 1213234772004.

It is not an unprimeable number, because it can be changed into a prime (1213234772047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3735687 + ... + 4047446.

Almost surely, 2^{1213234772040} is an apocalyptic number.

1213234772040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213234772040 is an abundant number, since it is smaller than the sum of its proper divisors (2738885010480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213234772040 is a wasteful number, since it uses less digits than its factorization.

1213234772040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7783583 (or 7783576 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The spelling of 1213234772040 in words is "one trillion, two hundred thirteen billion, two hundred thirty-four million, seven hundred seventy-two thousand, forty".