51133040748 has 54 divisors (see below), whose sum is σ = 134058594124. Its totient is φ = 17041996944.

The previous prime is 51133040743. The next prime is 51133040753. The reversal of 51133040748 is 84704033115.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

51133040748 is a `hidden beast` number, since 511 + 3 + 30 + 40 + 74 + 8 = 666.

51133040748 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51133040743) and next prime (51133040753).

It is a tau number, because it is divible by the number of its divisors (54).

It is a super-2 number, since 2×51133040748² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (51133040741) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7046290 + ... + 7053542.

Almost surely, 2^51133040748 is an apocalyptic number.

It is an amenable number.

51133040748 is an abundant number, since it is smaller than the sum of its proper divisors (82925553376).

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

51133040748 is an frugal number, since it uses more digits than its factorization.

51133040748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14525 (or 7258 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 51133040748 in words is "fifty-one billion, one hundred thirty-three million, forty thousand, seven hundred forty-eight".