155476961940 has 48 divisors (see below), whose sum is σ = 437740692480. Its totient is φ = 41231456640.

The previous prime is 155476961909. The next prime is 155476961963. The reversal of 155476961940 is 49169674551.

It is a happy number.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 7147380 + ... + 7169099.

It is an arithmetic number, because the mean of its divisors is an integer number (9119597760).

Almost surely, 2^155476961940 is an apocalyptic number.

155476961940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155476961940 is an abundant number, since it is smaller than the sum of its proper divisors (282263730540).

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

155476961940 is a wasteful number, since it uses less digits than its factorization.

155476961940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14316672 (or 14316670 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 57.

The spelling of 155476961940 in words is "one hundred fifty-five billion, four hundred seventy-six million, nine hundred sixty-one thousand, nine hundred forty".