2601640155 has 32 divisors (see below), whose sum is σ = 4198993920. Its totient is φ = 1375459200.

The previous prime is 2601640103. The next prime is 2601640157. The reversal of 2601640155 is 5510461062.

2601640155 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2601640155 - 2¹¹ = 2601638107 is a prime.

It is a super-2 number, since 2×2601640155² = 13537062992216848050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2601640157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1478166 + ... + 1479924.

It is an arithmetic number, because the mean of its divisors is an integer number (131218560).

Almost surely, 2^2601640155 is an apocalyptic number.

2601640155 is a deficient number, since it is larger than the sum of its proper divisors (1597353765).

2601640155 is a wasteful number, since it uses less digits than its factorization.

2601640155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2571.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 2601640155 is about 51006.2756432971. The cubic root of 2601640155 is about 1375.3579506642.

The spelling of 2601640155 in words is "two billion, six hundred one million, six hundred forty thousand, one hundred fifty-five".