97870651947 has 16 divisors (see below), whose sum is σ = 145129236000. Its totient is φ = 65186046432.

The previous prime is 97870651913. The next prime is 97870651961. The reversal of 97870651947 is 74915607879.

97870651947 is a `hidden beast` number, since 9 + 7 + 8 + 70 + 6 + 519 + 47 = 666.

It is not a de Polignac number, because 97870651947 - 2⁸ = 97870651691 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (97870651987) 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, 1666572 + ... + 1724297.

It is an arithmetic number, because the mean of its divisors is an integer number (9070577250).

Almost surely, 2^97870651947 is an apocalyptic number.

97870651947 is a deficient number, since it is larger than the sum of its proper divisors (47258584053).

97870651947 is a wasteful number, since it uses less digits than its factorization.

97870651947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3391947 (or 3391941 counting only the distinct ones).

The product of its (nonzero) digits is 26671680, while the sum is 63.

The spelling of 97870651947 in words is "ninety-seven billion, eight hundred seventy million, six hundred fifty-one thousand, nine hundred forty-seven".