615402155321340 has 48 divisors (see below), whose sum is σ = 1727555664875040. Its totient is φ = 163685371897600.

The previous prime is 615402155321281. The next prime is 615402155321389. The reversal of 615402155321340 is 43123551204516.

It is a junction number, because it is equal to n+sod(n) for n = 615402155321292 and 615402155321301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13183399011 + ... + 13183445690.

It is an arithmetic number, because the mean of its divisors is an integer number (35990743018230).

Almost surely, 2^{615402155321340} is an apocalyptic number.

615402155321340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

615402155321340 is an abundant number, since it is smaller than the sum of its proper divisors (1112153509553700).

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

615402155321340 is a wasteful number, since it uses less digits than its factorization.

615402155321340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26366845102 (or 26366845100 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 615402155321340 in words is "six hundred fifteen trillion, four hundred two billion, one hundred fifty-five million, three hundred twenty-one thousand, three hundred forty".