61896001950 has 36 divisors (see below), whose sum is σ = 166293926448. Its totient is φ = 16505600400.

The previous prime is 61896001949. The next prime is 61896001957. The reversal of 61896001950 is 5910069816.

It is a super-2 number, since 2×61896001950² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61896001896 and 61896001905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61896001957) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 68772886 + ... + 68773785.

Almost surely, 2^61896001950 is an apocalyptic number.

61896001950 is an abundant number, since it is smaller than the sum of its proper divisors (104397924498).

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

61896001950 is a wasteful number, since it uses less digits than its factorization.

61896001950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137546689 (or 137546681 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The spelling of 61896001950 in words is "sixty-one billion, eight hundred ninety-six million, one thousand, nine hundred fifty".