46778621553 has 128 divisors (see below), whose sum is σ = 76590489600. Its totient is φ = 28131307776.

The previous prime is 46778621543. The next prime is 46778621597. The reversal of 46778621553 is 35512687764.

46778621553 is a `hidden beast` number, since 4 + 6 + 7 + 7 + 8 + 621 + 5 + 5 + 3 = 666.

46778621553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 46778621553 - 2⁴ = 46778621537 is a prime.

It is a super-2 number, since 2×46778621553² (a number of 22 digits) contains 22 as substring.

Its product of digits (8467200) is a multiple of the sum of its prime factors (588).

It is a self number, because there is not a number n which added to its sum of digits gives 46778621553.

It is not an unprimeable number, because it can be changed into a prime (46778621543) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 130302388 + ... + 130302746.

It is an arithmetic number, because the mean of its divisors is an integer number (598363200).

Almost surely, 2^46778621553 is an apocalyptic number.

It is an amenable number.

46778621553 is a deficient number, since it is larger than the sum of its proper divisors (29811868047).

46778621553 is a wasteful number, since it uses less digits than its factorization.

46778621553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588 (or 582 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 54.

The spelling of 46778621553 in words is "forty-six billion, seven hundred seventy-eight million, six hundred twenty-one thousand, five hundred fifty-three".