15121354345064 has 32 divisors (see below), whose sum is σ = 31588129008000. Its totient is φ = 6727101544320.

The previous prime is 15121354345043. The next prime is 15121354345093. The reversal of 15121354345064 is 46054345312151.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 1828012589 + ... + 1828020860.

It is an arithmetic number, because the mean of its divisors is an integer number (987129031500).

Almost surely, 2^{15121354345064} is an apocalyptic number.

It is an amenable number.

15121354345064 is an abundant number, since it is smaller than the sum of its proper divisors (16466774662936).

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

15121354345064 is a wasteful number, since it uses less digits than its factorization.

15121354345064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3656033513 (or 3656033509 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 15121354345064 in words is "fifteen trillion, one hundred twenty-one billion, three hundred fifty-four million, three hundred forty-five thousand, sixty-four".