61501006650 has 24 divisors (see below), whose sum is σ = 152522496864. Its totient is φ = 16400268400.

The previous prime is 61501006613. The next prime is 61501006657. The reversal of 61501006650 is 5660010516.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (61501006657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 205003206 + ... + 205003505.

It is an arithmetic number, because the mean of its divisors is an integer number (6355104036).

Almost surely, 2^61501006650 is an apocalyptic number.

61501006650 is an abundant number, since it is smaller than the sum of its proper divisors (91021490214).

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

61501006650 is a wasteful number, since it uses less digits than its factorization.

61501006650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410006726 (or 410006721 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The spelling of 61501006650 in words is "sixty-one billion, five hundred one million, six thousand, six hundred fifty".