2051623701 has 16 divisors (see below), whose sum is σ = 3044209920. Its totient is φ = 1365603840.

The previous prime is 2051623669. The next prime is 2051623709. The reversal of 2051623701 is 1073261502.

It is a happy number.

It is not a de Polignac number, because 2051623701 - 2⁵ = 2051623669 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051623709) 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, 41965 + ... + 76578.

It is an arithmetic number, because the mean of its divisors is an integer number (190263120).

Almost surely, 2^2051623701 is an apocalyptic number.

It is an amenable number.

2051623701 is a deficient number, since it is larger than the sum of its proper divisors (992586219).

2051623701 is a wasteful number, since it uses less digits than its factorization.

2051623701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119193 (or 119187 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 2051623701 is about 45294.8529195095. The cubic root of 2051623701 is about 1270.6693933261.

The spelling of 2051623701 in words is "two billion, fifty-one million, six hundred twenty-three thousand, seven hundred one".