15457761636496 has 15 divisors (see below), whose sum is σ = 29949443640921. Its totient is φ = 7728872954976.

The previous prime is 15457761636353. The next prime is 15457761636571. The reversal of 15457761636496 is 69463616775451.

The square root of 15457761636496 is 3931636.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 15281563178896 + 176198457600 = 3909164^2 + 419760^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 15235090 + ... + 16217998.

Almost surely, 2^{15457761636496} is an apocalyptic number.

15457761636496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

15457761636496 is the 3931636-th square number.

It is an amenable number.

15457761636496 is a deficient number, since it is larger than the sum of its proper divisors (14491682004425).

15457761636496 is an frugal number, since it uses more digits than its factorization.

15457761636496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965826 (or 982911 counting only the distinct ones).

The product of its digits is 685843200, while the sum is 70.

The spelling of 15457761636496 in words is "fifteen trillion, four hundred fifty-seven billion, seven hundred sixty-one million, six hundred thirty-six thousand, four hundred ninety-six".