61377263601 has 4 divisors (see below), whose sum is σ = 81836351472. Its totient is φ = 40918175732.

The previous prime is 61377263593. The next prime is 61377263611. The reversal of 61377263601 is 10636277316.

It is a happy number.

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 61377263601 - 2³ = 61377263593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61377263611) 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, 10229543931 + ... + 10229543936.

It is an arithmetic number, because the mean of its divisors is an integer number (20459087868).

Almost surely, 2^61377263601 is an apocalyptic number.

It is an amenable number.

61377263601 is a deficient number, since it is larger than the sum of its proper divisors (20459087871).

61377263601 is a wasteful number, since it uses less digits than its factorization.

61377263601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20459087870.

The product of its (nonzero) digits is 190512, while the sum is 42.

The spelling of 61377263601 in words is "sixty-one billion, three hundred seventy-seven million, two hundred sixty-three thousand, six hundred one".