64751472551 has 4 divisors (see below), whose sum is σ = 64920536832. Its totient is φ = 64582408272.

The previous prime is 64751472523. The next prime is 64751472559. The reversal of 64751472551 is 15527415746.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15527415746 = 2 ⋅7763707873.

It is a cyclic number.

It is not a de Polignac number, because 64751472551 - 2³⁴ = 47571603367 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64751472496 and 64751472505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64751472559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84531566 + ... + 84532331.

It is an arithmetic number, because the mean of its divisors is an integer number (16230134208).

Almost surely, 2^64751472551 is an apocalyptic number.

64751472551 is a deficient number, since it is larger than the sum of its proper divisors (169064281).

64751472551 is a wasteful number, since it uses less digits than its factorization.

64751472551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169064280.

The product of its digits is 1176000, while the sum is 47.

The spelling of 64751472551 in words is "sixty-four billion, seven hundred fifty-one million, four hundred seventy-two thousand, five hundred fifty-one".