155563233555 has 32 divisors (see below), whose sum is σ = 249255272448. Its totient is φ = 82849132800.

The previous prime is 155563233547. The next prime is 155563233563. The reversal of 155563233555 is 555332365551.

It is an interprime number because it is at equal distance from previous prime (155563233547) and next prime (155563233563).

It is not a de Polignac number, because 155563233555 - 2³ = 155563233547 is a prime.

It is a super-4 number, since 4×155563233555⁴ (a number of 46 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57893422 + ... + 57896108.

It is an arithmetic number, because the mean of its divisors is an integer number (7789227264).

Almost surely, 2^155563233555 is an apocalyptic number.

155563233555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155563233555 is a deficient number, since it is larger than the sum of its proper divisors (93692038893).

155563233555 is a wasteful number, since it uses less digits than its factorization.

155563233555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6747.

The product of its digits is 5062500, while the sum is 48.

The spelling of 155563233555 in words is "one hundred fifty-five billion, five hundred sixty-three million, two hundred thirty-three thousand, five hundred fifty-five".