1407780347440 has 40 divisors (see below), whose sum is σ = 3273160660560. Its totient is φ = 563099863296.

The previous prime is 1407780347387. The next prime is 1407780347453. The reversal of 1407780347440 is 447430877041.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1407780347440² (a number of 25 digits) contains 22 as substring.

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, 4096347 + ... + 4426693.

It is an arithmetic number, because the mean of its divisors is an integer number (81829016514).

Almost surely, 2^{1407780347440} is an apocalyptic number.

1407780347440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1407780347440 is an abundant number, since it is smaller than the sum of its proper divisors (1865380313120).

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

1407780347440 is a wasteful number, since it uses less digits than its factorization.

1407780347440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383629 (or 383623 counting only the distinct ones).

The product of its (nonzero) digits is 2107392, while the sum is 49.

The spelling of 1407780347440 in words is "one trillion, four hundred seven billion, seven hundred eighty million, three hundred forty-seven thousand, four hundred forty".