2646436401 has 16 divisors (see below), whose sum is σ = 4480739200. Its totient is φ = 1512249264.

The previous prime is 2646436391. The next prime is 2646436409. The reversal of 2646436401 is 1046346462.

2646436401 is a `hidden beast` number, since 2 + 6 + 4 + 6 + 4 + 3 + 640 + 1 = 666.

It is not a de Polignac number, because 2646436401 - 2²⁶ = 2579327537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2646436409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7000966 + ... + 7001343.

It is an arithmetic number, because the mean of its divisors is an integer number (280046200).

Almost surely, 2^2646436401 is an apocalyptic number.

2646436401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2646436401 is a deficient number, since it is larger than the sum of its proper divisors (1834302799).

2646436401 is a wasteful number, since it uses less digits than its factorization.

2646436401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14002325 (or 14002319 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 2646436401 is about 51443.5263274204. The cubic root of 2646436401 is about 1383.2069227047.

The spelling of 2646436401 in words is "two billion, six hundred forty-six million, four hundred thirty-six thousand, four hundred one".