61490527013 has 4 divisors (see below), whose sum is σ = 64726870560. Its totient is φ = 58254183468.

The previous prime is 61490527003. The next prime is 61490527027. The reversal of 61490527013 is 31072509416.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61490527013 - 2⁶ = 61490526949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61490527003) 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, 1618171745 + ... + 1618171782.

It is an arithmetic number, because the mean of its divisors is an integer number (16181717640).

Almost surely, 2^61490527013 is an apocalyptic number.

It is an amenable number.

61490527013 is a deficient number, since it is larger than the sum of its proper divisors (3236343547).

61490527013 is a wasteful number, since it uses less digits than its factorization.

61490527013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3236343546.

The product of its (nonzero) digits is 45360, while the sum is 38.

The spelling of 61490527013 in words is "sixty-one billion, four hundred ninety million, five hundred twenty-seven thousand, thirteen".