49261386420 has 36 divisors (see below), whose sum is σ = 149426206020. Its totient is φ = 13136369664.

The previous prime is 49261386409. The next prime is 49261386439. The reversal of 49261386420 is 2468316294.

49261386420 is a `hidden beast` number, since 4 + 9 + 2 + 613 + 8 + 6 + 4 + 20 = 666.

49261386420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11098201104 + 38163185316 = 105348^2 + 195354^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 136837005 + ... + 136837364.

It is an arithmetic number, because the mean of its divisors is an integer number (4150727945).

Almost surely, 2^49261386420 is an apocalyptic number.

It is an amenable number.

49261386420 is an abundant number, since it is smaller than the sum of its proper divisors (100164819600).

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

49261386420 is a wasteful number, since it uses less digits than its factorization.

49261386420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273674384 (or 273674379 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 49261386420 in words is "forty-nine billion, two hundred sixty-one million, three hundred eighty-six thousand, four hundred twenty".