49154264639 has 4 divisors (see below), whose sum is σ = 49156324080. Its totient is φ = 49152205200.

The previous prime is 49154264629. The next prime is 49154264651. The reversal of 49154264639 is 93646245194.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49154264639 is a prime.

It is a super-2 number, since 2×49154264639² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49154264629) 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, 993494 + ... + 1041795.

It is an arithmetic number, because the mean of its divisors is an integer number (12289081020).

Almost surely, 2^49154264639 is an apocalyptic number.

49154264639 is a deficient number, since it is larger than the sum of its proper divisors (2059441).

49154264639 is a wasteful number, since it uses less digits than its factorization.

49154264639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059440.

The product of its digits is 5598720, while the sum is 53.

The spelling of 49154264639 in words is "forty-nine billion, one hundred fifty-four million, two hundred sixty-four thousand, six hundred thirty-nine".