155953492780 has 24 divisors (see below), whose sum is σ = 328747601952. Its totient is φ = 62144203392.

The previous prime is 155953492771. The next prime is 155953492819. The reversal of 155953492780 is 87294359551.

155953492780 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14819217 + ... + 14829736.

It is an arithmetic number, because the mean of its divisors is an integer number (13697816748).

Almost surely, 2^155953492780 is an apocalyptic number.

155953492780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155953492780 is an abundant number, since it is smaller than the sum of its proper divisors (172794109172).

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

155953492780 is a wasteful number, since it uses less digits than its factorization.

155953492780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29649225 (or 29649223 counting only the distinct ones).

The product of its (nonzero) digits is 13608000, while the sum is 58.

The spelling of 155953492780 in words is "one hundred fifty-five billion, nine hundred fifty-three million, four hundred ninety-two thousand, seven hundred eighty".