15764016881 has 16 divisors (see below), whose sum is σ = 17204400000. Its totient is φ = 14387014656.

The previous prime is 15764016841. The next prime is 15764016883. The reversal of 15764016881 is 18861046751.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15764016881 is a prime.

It is a super-2 number, since 2×15764016881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15764016883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215540 + ... + 279258.

It is an arithmetic number, because the mean of its divisors is an integer number (1075275000).

Almost surely, 2^15764016881 is an apocalyptic number.

It is an amenable number.

15764016881 is a deficient number, since it is larger than the sum of its proper divisors (1440383119).

15764016881 is a wasteful number, since it uses less digits than its factorization.

15764016881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64216.

The product of its (nonzero) digits is 322560, while the sum is 47.

The spelling of 15764016881 in words is "fifteen billion, seven hundred sixty-four million, sixteen thousand, eight hundred eighty-one".