61402631897401 has 4 divisors (see below), whose sum is σ = 61402710459904. Its totient is φ = 61402553334900.

The previous prime is 61402631897359. The next prime is 61402631897413. The reversal of 61402631897401 is 10479813620416.

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 61402631897401 - 2²¹ = 61402629800249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61402631897501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38096985 + ... + 39676006.

It is an arithmetic number, because the mean of its divisors is an integer number (15350677614976).

Almost surely, 2^{61402631897401} is an apocalyptic number.

It is an amenable number.

61402631897401 is a deficient number, since it is larger than the sum of its proper divisors (78562503).

61402631897401 is an equidigital number, since it uses as much as digits as its factorization.

61402631897401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78562502.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 61402631897401 in words is "sixty-one trillion, four hundred two billion, six hundred thirty-one million, eight hundred ninety-seven thousand, four hundred one".