155606655420516 has 48 divisors (see below), whose sum is σ = 363131211789248. Its totient is φ = 51861883478400.

The previous prime is 155606655420467. The next prime is 155606655420539. The reversal of 155606655420516 is 615024556606551.

It is a happy number.

It is a super-2 number, since 2×155606655420516² (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 15 ways as a sum of consecutive naturals, for example, 4354930371 + ... + 4354966101.

Almost surely, 2^{155606655420516} is an apocalyptic number.

It is an amenable number.

155606655420516 is an abundant number, since it is smaller than the sum of its proper divisors (207524556368732).

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

155606655420516 is a wasteful number, since it uses less digits than its factorization.

155606655420516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74572 (or 74570 counting only the distinct ones).

The product of its (nonzero) digits is 32400000, while the sum is 57.

The spelling of 155606655420516 in words is "one hundred fifty-five trillion, six hundred six billion, six hundred fifty-five million, four hundred twenty thousand, five hundred sixteen".