101050649978 has 24 divisors (see below), whose sum is σ = 160049443680. Its totient is φ = 47843385480.

The previous prime is 101050649969. The next prime is 101050649993. The reversal of 101050649978 is 879946050101.

It is a super-2 number, since 2×101050649978² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1541123 + ... + 1605353.

It is an arithmetic number, because the mean of its divisors is an integer number (6668726820).

Almost surely, 2^101050649978 is an apocalyptic number.

101050649978 is a deficient number, since it is larger than the sum of its proper divisors (58998793702).

101050649978 is a wasteful number, since it uses less digits than its factorization.

101050649978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66450 (or 66431 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 50.

The spelling of 101050649978 in words is "one hundred one billion, fifty million, six hundred forty-nine thousand, nine hundred seventy-eight".