61002641642 has 8 divisors (see below), whose sum is σ = 91505076132. Its totient is φ = 30500949600.

The previous prime is 61002641639. The next prime is 61002641657. The reversal of 61002641642 is 24614620016.

It can be written as a sum of positive squares in 2 ways, for example, as 54601201561 + 6401440081 = 233669^2 + 80009^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 61002641599 and 61002641608.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121292 + ... + 369752.

Almost surely, 2^61002641642 is an apocalyptic number.

61002641642 is a deficient number, since it is larger than the sum of its proper divisors (30502434490).

61002641642 is a wasteful number, since it uses less digits than its factorization.

61002641642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371224.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 61002641642 in words is "sixty-one billion, two million, six hundred forty-one thousand, six hundred forty-two".