1351551636040 has 16 divisors (see below), whose sum is σ = 3040991181180. Its totient is φ = 540620654400.

The previous prime is 1351551635977. The next prime is 1351551636047. The reversal of 1351551636040 is 406361551531.

It can be written as a sum of positive squares in 2 ways, for example, as 1350834360516 + 717275524 = 1162254^2 + 26782^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 33788790901 = 1351551636040 / (1 + 3 + 5 + 1 + 5 + 5 + 1 + 6 + 3 + 6 + 0 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1351551635984 and 1351551636002.

It is not an unprimeable number, because it can be changed into a prime (1351551636047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16894395411 + ... + 16894395490.

Almost surely, 2^{1351551636040} is an apocalyptic number.

1351551636040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1351551636040 is an abundant number, since it is smaller than the sum of its proper divisors (1689439545140).

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

1351551636040 is a wasteful number, since it uses less digits than its factorization.

1351551636040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33788790912 (or 33788790908 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 1351551636040 in words is "one trillion, three hundred fifty-one billion, five hundred fifty-one million, six hundred thirty-six thousand, forty".