78587621402532 has 192 divisors, whose sum is σ = 212098943508480. Its totient is φ = 22420829721600.

The previous prime is 78587621402443. The next prime is 78587621402567. The reversal of 78587621402532 is 23520412678587.

It is a super-2 number, since 2×78587621402532² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1655881819 + ... + 1655929277.

It is an arithmetic number, because the mean of its divisors is an integer number (1104681997440).

Almost surely, 2^{78587621402532} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78587621402532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106049471754240).

78587621402532 is an abundant number, since it is smaller than the sum of its proper divisors (133511322105948).

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

78587621402532 is a wasteful number, since it uses less digits than its factorization.

78587621402532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58482 (or 58480 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 60.

The spelling of 78587621402532 in words is "seventy-eight trillion, five hundred eighty-seven billion, six hundred twenty-one million, four hundred two thousand, five hundred thirty-two".