1213764371240 has 16 divisors (see below), whose sum is σ = 2730969835380. Its totient is φ = 485505748480.

The previous prime is 1213764371233. The next prime is 1213764371291. The reversal of 1213764371240 is 421734673121.

It can be written as a sum of positive squares in 2 ways, for example, as 1213341904324 + 422466916 = 1101518^2 + 20554^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15172054601 + ... + 15172054680.

Almost surely, 2^{1213764371240} is an apocalyptic number.

1213764371240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213764371240 is an abundant number, since it is smaller than the sum of its proper divisors (1517205464140).

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

1213764371240 is a wasteful number, since it uses less digits than its factorization.

1213764371240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30344109292 (or 30344109288 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 41.

The spelling of 1213764371240 in words is "one trillion, two hundred thirteen billion, seven hundred sixty-four million, three hundred seventy-one thousand, two hundred forty".