7155001601555 has 4 divisors (see below), whose sum is σ = 8586001921872. Its totient is φ = 5724001281240.

The previous prime is 7155001601549. The next prime is 7155001601557. The reversal of 7155001601555 is 5551061005517.

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

It is not a de Polignac number, because 7155001601555 - 2⁶ = 7155001601491 is a prime.

It is a super-2 number, since 2×7155001601555² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7155001601557) 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, 715500160151 + ... + 715500160160.

It is an arithmetic number, because the mean of its divisors is an integer number (2146500480468).

Almost surely, 2^{7155001601555} is an apocalyptic number.

7155001601555 is a deficient number, since it is larger than the sum of its proper divisors (1431000320317).

7155001601555 is a wasteful number, since it uses less digits than its factorization.

7155001601555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431000320316.

The product of its (nonzero) digits is 131250, while the sum is 41.

The spelling of 7155001601555 in words is "seven trillion, one hundred fifty-five billion, one million, six hundred one thousand, five hundred fifty-five".