145777527978 has 16 divisors (see below), whose sum is σ = 291716068896. Its totient is φ = 48565673840.

The previous prime is 145777527923. The next prime is 145777528037. The reversal of 145777527978 is 879725777541.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6697101 + ... + 6718832.

It is an arithmetic number, because the mean of its divisors is an integer number (18232254306).

Almost surely, 2^145777527978 is an apocalyptic number.

145777527978 is an abundant number, since it is smaller than the sum of its proper divisors (145938540918).

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

145777527978 is a wasteful number, since it uses less digits than its factorization.

145777527978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13417749.

The product of its digits is 242020800, while the sum is 69.

The spelling of 145777527978 in words is "one hundred forty-five billion, seven hundred seventy-seven million, five hundred twenty-seven thousand, nine hundred seventy-eight".