61836616402 has 32 divisors (see below), whose sum is σ = 106563283200. Its totient is φ = 26615595600.

The previous prime is 61836616399. The next prime is 61836616409. The reversal of 61836616402 is 20461663816.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (61836616409) 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, 876877 + ... + 944767.

It is an arithmetic number, because the mean of its divisors is an integer number (3330102600).

Almost surely, 2^61836616402 is an apocalyptic number.

61836616402 is a deficient number, since it is larger than the sum of its proper divisors (44726666798).

61836616402 is a wasteful number, since it uses less digits than its factorization.

61836616402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70102.

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 61836616402 in words is "sixty-one billion, eight hundred thirty-six million, six hundred sixteen thousand, four hundred two".