155303462640 has 80 divisors (see below), whose sum is σ = 483178994208. Its totient is φ = 41264729088.

The previous prime is 155303462593. The next prime is 155303462647. The reversal of 155303462640 is 46264303551.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155303462647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1101567 + ... + 1234526.

Almost surely, 2^155303462640 is an apocalyptic number.

155303462640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155303462640 is an abundant number, since it is smaller than the sum of its proper divisors (327875531568).

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

155303462640 is a wasteful number, since it uses less digits than its factorization.

155303462640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2336386 (or 2336380 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 39.

The spelling of 155303462640 in words is "one hundred fifty-five billion, three hundred three million, four hundred sixty-two thousand, six hundred forty".