155187540650 has 48 divisors (see below), whose sum is σ = 294237759840. Its totient is φ = 60881198400.

The previous prime is 155187540619. The next prime is 155187540667. The reversal of 155187540650 is 56045781551.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 155187540595 and 155187540604.

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, 666005 + ... + 868295.

It is an arithmetic number, because the mean of its divisors is an integer number (6129953330).

Almost surely, 2^155187540650 is an apocalyptic number.

155187540650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155187540650 is a deficient number, since it is larger than the sum of its proper divisors (139050219190).

155187540650 is a wasteful number, since it uses less digits than its factorization.

155187540650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202599 (or 202594 counting only the distinct ones).

The product of its (nonzero) digits is 840000, while the sum is 47.

The spelling of 155187540650 in words is "one hundred fifty-five billion, one hundred eighty-seven million, five hundred forty thousand, six hundred fifty".