87251651448 has 64 divisors (see below), whose sum is σ = 236100886560. Its totient is φ = 26710365696.

The previous prime is 87251651423. The next prime is 87251651489. The reversal of 87251651448 is 84415615278.

It is a happy number.

It is a super-2 number, since 2×87251651448² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87251651448.

It is a congruent number.

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, 648315 + ... + 771242.

Almost surely, 2^87251651448 is an apocalyptic number.

It is an amenable number.

87251651448 is an abundant number, since it is smaller than the sum of its proper divisors (148849235112).

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

87251651448 is a wasteful number, since it uses less digits than its factorization.

87251651448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419776 (or 1419772 counting only the distinct ones).

The product of its digits is 2150400, while the sum is 51.

The spelling of 87251651448 in words is "eighty-seven billion, two hundred fifty-one million, six hundred fifty-one thousand, four hundred forty-eight".