155655100000 has 72 divisors (see below), whose sum is σ = 383033203056. Its totient is φ = 62262000000.

The previous prime is 155655099997. The next prime is 155655100009. The reversal of 155655100000 is 1556551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155655100009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 678276 + ... + 878275.

It is an arithmetic number, because the mean of its divisors is an integer number (5319905598).

Almost surely, 2^155655100000 is an apocalyptic number.

155655100000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155655100000 is an abundant number, since it is smaller than the sum of its proper divisors (227378103056).

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

155655100000 is an frugal number, since it uses more digits than its factorization.

155655100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556586 (or 1556558 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 28.

Adding to 155655100000 its reverse (1556551), we get a palindrome (155656656551).

155655100000 divided by its reverse (1556551) gives a 5-th power (100000 = 10⁵).

The spelling of 155655100000 in words is "one hundred fifty-five billion, six hundred fifty-five million, one hundred thousand".