155042696866920 has 32 divisors (see below), whose sum is σ = 465128090601120. Its totient is φ = 41344719164480.

The previous prime is 155042696866907. The next prime is 155042696866931. The reversal of 155042696866920 is 29668696240551.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 646011236826 + ... + 646011237065.

It is an arithmetic number, because the mean of its divisors is an integer number (14535252831285).

Almost surely, 2^{155042696866920} is an apocalyptic number.

155042696866920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155042696866920 is an abundant number, since it is smaller than the sum of its proper divisors (310085393734200).

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

155042696866920 is a wasteful number, since it uses less digits than its factorization.

155042696866920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292022473905 (or 1292022473901 counting only the distinct ones).

The product of its (nonzero) digits is 335923200, while the sum is 69.

The spelling of 155042696866920 in words is "one hundred fifty-five trillion, forty-two billion, six hundred ninety-six million, eight hundred sixty-six thousand, nine hundred twenty".