62640621377 has 4 divisors (see below), whose sum is σ = 62641605936. Its totient is φ = 62639636820.

The previous prime is 62640621367. The next prime is 62640621397. The reversal of 62640621377 is 77312604626.

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 62640621377 - 2¹⁰ = 62640620353 is a prime.

It is a super-2 number, since 2×62640621377² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (62640621317) 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, 389723 + ... + 526464.

It is an arithmetic number, because the mean of its divisors is an integer number (15660401484).

Almost surely, 2^62640621377 is an apocalyptic number.

It is an amenable number.

62640621377 is a deficient number, since it is larger than the sum of its proper divisors (984559).

62640621377 is an equidigital number, since it uses as much as digits as its factorization.

62640621377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984558.

The product of its (nonzero) digits is 508032, while the sum is 44.

The spelling of 62640621377 in words is "sixty-two billion, six hundred forty million, six hundred twenty-one thousand, three hundred seventy-seven".