87720370352 has 20 divisors (see below), whose sum is σ = 169982285616. Its totient is φ = 43853974080.

The previous prime is 87720370313. The next prime is 87720370391. The reversal of 87720370352 is 25307302778.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (87720370313) and next prime (87720370391).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270599 + ... + 498662.

Almost surely, 2^87720370352 is an apocalyptic number.

It is an amenable number.

87720370352 is a deficient number, since it is larger than the sum of its proper divisors (82261915264).

87720370352 is a wasteful number, since it uses less digits than its factorization.

87720370352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776396 (or 776390 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 44.

The spelling of 87720370352 in words is "eighty-seven billion, seven hundred twenty million, three hundred seventy thousand, three hundred fifty-two".