79661795152481 has 8 divisors (see below), whose sum is σ = 81534118036800. Its totient is φ = 77790368768112.

The previous prime is 79661795152477. The next prime is 79661795152543. The reversal of 79661795152481 is 18425159716697.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79661795152481 - 2² = 79661795152477 is a prime.

It is a super-2 number, since 2×79661795152481² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79661795152781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223945181 + ... + 224300618.

It is an arithmetic number, because the mean of its divisors is an integer number (10191764754600).

Almost surely, 2^{79661795152481} is an apocalyptic number.

It is an amenable number.

79661795152481 is a deficient number, since it is larger than the sum of its proper divisors (1872322884319).

79661795152481 is a wasteful number, since it uses less digits than its factorization.

79661795152481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448249975.

The product of its digits is 228614400, while the sum is 71.

The spelling of 79661795152481 in words is "seventy-nine trillion, six hundred sixty-one billion, seven hundred ninety-five million, one hundred fifty-two thousand, four hundred eighty-one".