155550040620 has 48 divisors (see below), whose sum is σ = 469043201760. Its totient is φ = 38289240576.

The previous prime is 155550040619. The next prime is 155550040649. The reversal of 155550040620 is 26040055551.

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, 99710785 + ... + 99712344.

It is an arithmetic number, because the mean of its divisors is an integer number (9771733370).

Almost surely, 2^155550040620 is an apocalyptic number.

155550040620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155550040620 is an abundant number, since it is smaller than the sum of its proper divisors (313493161140).

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

155550040620 is a wasteful number, since it uses less digits than its factorization.

155550040620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199423154 (or 199423152 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 155550040620 in words is "one hundred fifty-five billion, five hundred fifty million, forty thousand, six hundred twenty".