61825968402 has 32 divisors (see below), whose sum is σ = 136740882240. Its totient is φ = 18478494720.

The previous prime is 61825968361. The next prime is 61825968427. The reversal of 61825968402 is 20486952816.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6411327 + ... + 6420962.

It is an arithmetic number, because the mean of its divisors is an integer number (4273152570).

Almost surely, 2^61825968402 is an apocalyptic number.

61825968402 is an abundant number, since it is smaller than the sum of its proper divisors (74914913838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61825968402 is a wasteful number, since it uses less digits than its factorization.

61825968402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12832378.

The product of its (nonzero) digits is 1658880, while the sum is 51.

The spelling of 61825968402 in words is "sixty-one billion, eight hundred twenty-five million, nine hundred sixty-eight thousand, four hundred two".