54691401780 has 72 divisors (see below), whose sum is σ = 166014287712. Its totient is φ = 14574085056.

The previous prime is 54691401719. The next prime is 54691401799. The reversal of 54691401780 is 8710419645.

54691401780 is a `hidden beast` number, since 5 + 469 + 14 + 0 + 178 + 0 = 666.

54691401780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×54691401780² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 150399 + ... + 363321.

It is an arithmetic number, because the mean of its divisors is an integer number (2305753996).

Almost surely, 2^54691401780 is an apocalyptic number.

It is an amenable number.

54691401780 is an abundant number, since it is smaller than the sum of its proper divisors (111322885932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54691401780 is a wasteful number, since it uses less digits than its factorization.

54691401780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214365 (or 214360 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 54691401780 in words is "fifty-four billion, six hundred ninety-one million, four hundred one thousand, seven hundred eighty".