49942070661 has 16 divisors (see below), whose sum is σ = 76320272000. Its totient is φ = 28456550208.

The previous prime is 49942070657. The next prime is 49942070687. The reversal of 49942070661 is 16607024994.

It is a happy number.

It is not a de Polignac number, because 49942070661 - 2² = 49942070657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49942070661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49942070261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3399826 + ... + 3414483.

It is an arithmetic number, because the mean of its divisors is an integer number (4770017000).

Almost surely, 2^49942070661 is an apocalyptic number.

It is an amenable number.

49942070661 is a deficient number, since it is larger than the sum of its proper divisors (26378201339).

49942070661 is a wasteful number, since it uses less digits than its factorization.

49942070661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6814668.

The product of its (nonzero) digits is 653184, while the sum is 48.

The spelling of 49942070661 in words is "forty-nine billion, nine hundred forty-two million, seventy thousand, six hundred sixty-one".