61722838950 has 48 divisors (see below), whose sum is σ = 153097220496. Its totient is φ = 16456780800.

The previous prime is 61722838921. The next prime is 61722838979. The reversal of 61722838950 is 5983822716.

It is an interprime number because it is at equal distance from previous prime (61722838921) and next prime (61722838979).

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 61722838893 and 61722838902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1014594 + ... + 1073706.

It is an arithmetic number, because the mean of its divisors is an integer number (3189525427).

Almost surely, 2^61722838950 is an apocalyptic number.

61722838950 is an abundant number, since it is smaller than the sum of its proper divisors (91374381546).

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

61722838950 is a wasteful number, since it uses less digits than its factorization.

61722838950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66089 (or 66084 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 61722838950 in words is "sixty-one billion, seven hundred twenty-two million, eight hundred thirty-eight thousand, nine hundred fifty".