97697201544 has 64 divisors (see below), whose sum is σ = 285664344000. Its totient is φ = 30851746560.

The previous prime is 97697201527. The next prime is 97697201579. The reversal of 97697201544 is 44510279679.

97697201544 is a `hidden beast` number, since 9 + 7 + 6 + 97 + 2 + 0 + 1 + 544 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11898577 + ... + 11906784.

It is an arithmetic number, because the mean of its divisors is an integer number (4463505375).

Almost surely, 2^97697201544 is an apocalyptic number.

It is an amenable number.

97697201544 is an abundant number, since it is smaller than the sum of its proper divisors (187967142456).

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

97697201544 is a wasteful number, since it uses less digits than its factorization.

97697201544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23805395 (or 23805385 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The spelling of 97697201544 in words is "ninety-seven billion, six hundred ninety-seven million, two hundred one thousand, five hundred forty-four".