1078159857550 has 24 divisors (see below), whose sum is σ = 2005431075000. Its totient is φ = 431252386080.

The previous prime is 1078159857527. The next prime is 1078159857571. The reversal of 1078159857550 is 557589518701.

It is a happy number.

It is a congruent 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, 1736076 + ... + 2273824.

It is an arithmetic number, because the mean of its divisors is an integer number (83559628125).

Almost surely, 2^{1078159857550} is an apocalyptic number.

1078159857550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1078159857550 is a deficient number, since it is larger than the sum of its proper divisors (927271217450).

1078159857550 is a wasteful number, since it uses less digits than its factorization.

1078159857550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577860 (or 577855 counting only the distinct ones).

The product of its (nonzero) digits is 17640000, while the sum is 61.

The spelling of 1078159857550 in words is "one trillion, seventy-eight billion, one hundred fifty-nine million, eight hundred fifty-seven thousand, five hundred fifty".