51091774041 has 64 divisors (see below), whose sum is σ = 94660945920. Its totient is φ = 23665167360.

The previous prime is 51091774037. The next prime is 51091774051. The reversal of 51091774041 is 14047719015.

It is a happy number.

It is not a de Polignac number, because 51091774041 - 2² = 51091774037 is a prime.

It is a super-2 number, since 2×51091774041² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51091774001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 267766 + ... + 416991.

It is an arithmetic number, because the mean of its divisors is an integer number (1479077280).

Almost surely, 2^51091774041 is an apocalyptic number.

51091774041 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

51091774041 is a deficient number, since it is larger than the sum of its proper divisors (43569171879).

51091774041 is a wasteful number, since it uses less digits than its factorization.

51091774041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684814.

The product of its (nonzero) digits is 35280, while the sum is 39.

The spelling of 51091774041 in words is "fifty-one billion, ninety-one million, seven hundred seventy-four thousand, forty-one".