51542002533 has 64 divisors (see below), whose sum is σ = 83176095744. Its totient is φ = 27765504000.

The previous prime is 51542002493. The next prime is 51542002537. The reversal of 51542002533 is 33520024515.

It is not a de Polignac number, because 51542002533 - 2⁹ = 51542002021 is a prime.

It is a super-2 number, since 2×51542002533² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51542002533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51542002537) 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, 27517485 + ... + 27519357.

It is an arithmetic number, because the mean of its divisors is an integer number (1299626496).

Almost surely, 2^51542002533 is an apocalyptic number.

It is an amenable number.

51542002533 is a deficient number, since it is larger than the sum of its proper divisors (31634093211).

51542002533 is a wasteful number, since it uses less digits than its factorization.

51542002533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2986.

The product of its (nonzero) digits is 18000, while the sum is 30.

The spelling of 51542002533 in words is "fifty-one billion, five hundred forty-two million, two thousand, five hundred thirty-three".