102213780615 has 24 divisors (see below), whose sum is σ = 177553247040. Its totient is φ = 54396264384.

The previous prime is 102213780601. The next prime is 102213780631. The reversal of 102213780615 is 516087312201.

102213780615 is a `hidden beast` number, since 1 + 0 + 2 + 2 + 1 + 37 + 8 + 0 + 615 = 666.

It is not a de Polignac number, because 102213780615 - 2¹² = 102213776519 is a prime.

It is a super-2 number, since 2×102213780615² (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 102213780615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2432100 + ... + 2473769.

It is an arithmetic number, because the mean of its divisors is an integer number (7398051960).

Almost surely, 2^102213780615 is an apocalyptic number.

102213780615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102213780615 is a deficient number, since it is larger than the sum of its proper divisors (75339466425).

102213780615 is a wasteful number, since it uses less digits than its factorization.

102213780615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4906343 (or 4906340 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The spelling of 102213780615 in words is "one hundred two billion, two hundred thirteen million, seven hundred eighty thousand, six hundred fifteen".