155118052552450 has 48 divisors (see below), whose sum is σ = 310716104224680. Its totient is φ = 57273857809920.

The previous prime is 155118052552447. The next prime is 155118052552469. The reversal of 155118052552450 is 54255250811551.

It can be written as a sum of positive squares in 12 ways, for example, as 9398461307481 + 145719591244969 = 3065691^2 + 12071437^2 .

It is a super-2 number, since 2×155118052552450² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155118052552394 and 155118052552403.

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, 78083086 + ... + 80045014.

Almost surely, 2^{155118052552450} is an apocalyptic number.

155118052552450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155118052552450 is an abundant number, since it is smaller than the sum of its proper divisors (155598051672230).

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

155118052552450 is a wasteful number, since it uses less digits than its factorization.

155118052552450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2083591 (or 2083586 counting only the distinct ones).

The product of its (nonzero) digits is 2000000, while the sum is 49.

The spelling of 155118052552450 in words is "one hundred fifty-five trillion, one hundred eighteen billion, fifty-two million, five hundred fifty-two thousand, four hundred fifty".