72157100205622 has 4 divisors (see below), whose sum is σ = 108235650308436. Its totient is φ = 36078550102810.

The previous prime is 72157100205607. The next prime is 72157100205637. The reversal of 72157100205622 is 22650200175127.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (72157100205607) and next prime (72157100205637).

It is a super-2 number, since 2×72157100205622² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18039275051404 + ... + 18039275051407.

It is an arithmetic number, because the mean of its divisors is an integer number (27058912577109).

Almost surely, 2^{72157100205622} is an apocalyptic number.

72157100205622 is a deficient number, since it is larger than the sum of its proper divisors (36078550102814).

72157100205622 is a wasteful number, since it uses less digits than its factorization.

72157100205622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36078550102813.

The product of its (nonzero) digits is 117600, while the sum is 40.

The spelling of 72157100205622 in words is "seventy-two trillion, one hundred fifty-seven billion, one hundred million, two hundred five thousand, six hundred twenty-two".