155722095379420 has 12 divisors (see below), whose sum is σ = 327016400296824. Its totient is φ = 62288838151760.

The previous prime is 155722095379397. The next prime is 155722095379429. The reversal of 155722095379420 is 24973590227551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155722095379429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3893052384466 + ... + 3893052384505.

It is an arithmetic number, because the mean of its divisors is an integer number (27251366691402).

Almost surely, 2^{155722095379420} is an apocalyptic number.

155722095379420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155722095379420 is an abundant number, since it is smaller than the sum of its proper divisors (171294304917404).

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

155722095379420 is a wasteful number, since it uses less digits than its factorization.

155722095379420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7786104768980 (or 7786104768978 counting only the distinct ones).

The product of its (nonzero) digits is 47628000, while the sum is 61.

The spelling of 155722095379420 in words is "one hundred fifty-five trillion, seven hundred twenty-two billion, ninety-five million, three hundred seventy-nine thousand, four hundred twenty".