72155615020510 has 16 divisors (see below), whose sum is σ = 148434408042336. Its totient is φ = 24739068007008.

The previous prime is 72155615020501. The next prime is 72155615020571. The reversal of 72155615020510 is 1502051655127.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 515397250077 + ... + 515397250216.

It is an arithmetic number, because the mean of its divisors is an integer number (9277150502646).

Almost surely, 2^{72155615020510} is an apocalyptic number.

72155615020510 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72155615020510 is an abundant number, since it is smaller than the sum of its proper divisors (76278793021826).

72155615020510 is a wasteful number, since it uses less digits than its factorization.

72155615020510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030794500307.

The product of its (nonzero) digits is 105000, while the sum is 40.

Adding to 72155615020510 its reverse (1502051655127), we get a palindrome (73657666675637).

The spelling of 72155615020510 in words is "seventy-two trillion, one hundred fifty-five billion, six hundred fifteen million, twenty thousand, five hundred ten".