155566420652 has 24 divisors (see below), whose sum is σ = 278102232576. Its totient is φ = 76116305408.

The previous prime is 155566420643. The next prime is 155566420687. The reversal of 155566420652 is 256024665551.

It is a super-2 number, since 2×155566420652² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155566420597 and 155566420606.

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, 876773 + ... + 1039164.

It is an arithmetic number, because the mean of its divisors is an integer number (11587593024).

Almost surely, 2^155566420652 is an apocalyptic number.

It is an amenable number.

155566420652 is a deficient number, since it is larger than the sum of its proper divisors (122535811924).

155566420652 is a wasteful number, since it uses less digits than its factorization.

155566420652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916377 (or 1916375 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 47.

The spelling of 155566420652 in words is "one hundred fifty-five billion, five hundred sixty-six million, four hundred twenty thousand, six hundred fifty-two".