6151722056555 has 4 divisors (see below), whose sum is σ = 7382066467872. Its totient is φ = 4921377645240.

The previous prime is 6151722056551. The next prime is 6151722056561. The reversal of 6151722056555 is 5556502271516.

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

It is not a de Polignac number, because 6151722056555 - 2² = 6151722056551 is a prime.

It is a super-2 number, since 2×6151722056555² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6151722056551) 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, 615172205651 + ... + 615172205660.

It is an arithmetic number, because the mean of its divisors is an integer number (1845516616968).

Almost surely, 2^{6151722056555} is an apocalyptic number.

6151722056555 is a deficient number, since it is larger than the sum of its proper divisors (1230344411317).

6151722056555 is a wasteful number, since it uses less digits than its factorization.

6151722056555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230344411316.

The product of its (nonzero) digits is 3150000, while the sum is 50.

The spelling of 6151722056555 in words is "six trillion, one hundred fifty-one billion, seven hundred twenty-two million, fifty-six thousand, five hundred fifty-five".