61465062551 has 4 divisors (see below), whose sum is σ = 61470374232. Its totient is φ = 61459750872.

The previous prime is 61465062517. The next prime is 61465062563. The reversal of 61465062551 is 15526056416.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61465062551 - 2¹⁰ = 61465061527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61465062499 and 61465062508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61465062251) 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, 2638445 + ... + 2661638.

It is an arithmetic number, because the mean of its divisors is an integer number (15367593558).

Almost surely, 2^61465062551 is an apocalyptic number.

61465062551 is a deficient number, since it is larger than the sum of its proper divisors (5311681).

61465062551 is a wasteful number, since it uses less digits than its factorization.

61465062551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5311680.

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 61465062551 in words is "sixty-one billion, four hundred sixty-five million, sixty-two thousand, five hundred fifty-one".