61553057469 has 8 divisors (see below), whose sum is σ = 84718186752. Its totient is φ = 39711649920.

The previous prime is 61553057453. The next prime is 61553057471. The reversal of 61553057469 is 96475035516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61553057469 - 2⁴ = 61553057453 is a prime.

It is a super-2 number, since 2×61553057469² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61553057429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330930324 + ... + 330930509.

It is an arithmetic number, because the mean of its divisors is an integer number (10589773344).

Almost surely, 2^61553057469 is an apocalyptic number.

It is an amenable number.

61553057469 is a deficient number, since it is larger than the sum of its proper divisors (23165129283).

61553057469 is a wasteful number, since it uses less digits than its factorization.

61553057469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661860867.

The product of its (nonzero) digits is 3402000, while the sum is 51.

The spelling of 61553057469 in words is "sixty-one billion, five hundred fifty-three million, fifty-seven thousand, four hundred sixty-nine".