78019620472 has 8 divisors (see below), whose sum is σ = 146286788400. Its totient is φ = 39009810232.

The previous prime is 78019620451. The next prime is 78019620529. The reversal of 78019620472 is 27402691087.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×78019620472² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4876226272 + ... + 4876226287.

It is an arithmetic number, because the mean of its divisors is an integer number (18285848550).

Almost surely, 2^78019620472 is an apocalyptic number.

It is an amenable number.

78019620472 is a deficient number, since it is larger than the sum of its proper divisors (68267167928).

78019620472 is a wasteful number, since it uses less digits than its factorization.

78019620472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9752452565 (or 9752452561 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 78019620472 in words is "seventy-eight billion, nineteen million, six hundred twenty thousand, four hundred seventy-two".