156990222453450 has 96 divisors (see below), whose sum is σ = 415004552740800. Its totient is φ = 39137028121600.

The previous prime is 156990222453413. The next prime is 156990222453479. The reversal of 156990222453450 is 54354222099651.

156990222453450 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 206213316 + ... + 206973215.

It is an arithmetic number, because the mean of its divisors is an integer number (4322964091050).

Almost surely, 2^{156990222453450} is an apocalyptic number.

156990222453450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

156990222453450 is an abundant number, since it is smaller than the sum of its proper divisors (258014330287350).

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

156990222453450 is a wasteful number, since it uses less digits than its factorization.

156990222453450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413186712 (or 413186707 counting only the distinct ones).

The product of its (nonzero) digits is 23328000, while the sum is 57.

The spelling of 156990222453450 in words is "one hundred fifty-six trillion, nine hundred ninety billion, two hundred twenty-two million, four hundred fifty-three thousand, four hundred fifty".