1290929215628 has 72 divisors (see below), whose sum is σ = 2592410017680. Its totient is φ = 560280913920.

The previous prime is 1290929215627. The next prime is 1290929215633. The reversal of 1290929215628 is 8265129290921.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1290929215627) 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, 13409168 + ... + 13505096.

It is an arithmetic number, because the mean of its divisors is an integer number (36005694690).

Almost surely, 2^{1290929215628} is an apocalyptic number.

It is an amenable number.

1290929215628 is an abundant number, since it is smaller than the sum of its proper divisors (1301480802052).

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

1290929215628 is a wasteful number, since it uses less digits than its factorization.

1290929215628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97147 (or 97132 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 56.

The spelling of 1290929215628 in words is "one trillion, two hundred ninety billion, nine hundred twenty-nine million, two hundred fifteen thousand, six hundred twenty-eight".