51261092003 has 24 divisors (see below), whose sum is σ = 59327944704. Its totient is φ = 43878477600.

The previous prime is 51261091949. The next prime is 51261092021. The reversal of 51261092003 is 30029016215.

It is not a de Polignac number, because 51261092003 - 2⁶ = 51261091939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51261092023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 411926 + ... + 521732.

It is an arithmetic number, because the mean of its divisors is an integer number (2471997696).

Almost surely, 2^51261092003 is an apocalyptic number.

51261092003 is a deficient number, since it is larger than the sum of its proper divisors (8066852701).

51261092003 is a wasteful number, since it uses less digits than its factorization.

51261092003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109923 (or 109886 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The spelling of 51261092003 in words is "fifty-one billion, two hundred sixty-one million, ninety-two thousand, three".