51003039090 has 64 divisors (see below), whose sum is σ = 129975342336. Its totient is φ = 12764454912.

The previous prime is 51003039089. The next prime is 51003039103. The reversal of 51003039090 is 9093030015.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38379 + ... + 321681.

It is an arithmetic number, because the mean of its divisors is an integer number (2030864724).

Almost surely, 2^51003039090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51003039090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64987671168).

51003039090 is an abundant number, since it is smaller than the sum of its proper divisors (78972303246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51003039090 is a wasteful number, since it uses less digits than its factorization.

51003039090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283683.

The product of its (nonzero) digits is 3645, while the sum is 30.

The spelling of 51003039090 in words is "fifty-one billion, three million, thirty-nine thousand, ninety".