1213062373640 has 32 divisors (see below), whose sum is σ = 2939343445080. Its totient is φ = 447899953152.

The previous prime is 1213062373637. The next prime is 1213062373657. The reversal of 1213062373640 is 463732603121.

It can be written as a sum of positive squares in 4 ways, for example, as 541616514916 + 671445858724 = 735946^2 + 819418^2 .

It is a super-3 number, since 3×1213062373640³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1213062373594 and 1213062373603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1166405609 + ... + 1166406648.

Almost surely, 2^{1213062373640} is an apocalyptic number.

1213062373640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213062373640 is an abundant number, since it is smaller than the sum of its proper divisors (1726281071440).

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

1213062373640 is a wasteful number, since it uses less digits than its factorization.

1213062373640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2332812281 (or 2332812277 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 38.

Adding to 1213062373640 its reverse (463732603121), we get a palindrome (1676794976761).

The spelling of 1213062373640 in words is "one trillion, two hundred thirteen billion, sixty-two million, three hundred seventy-three thousand, six hundred forty".